Prefabricated Bridge Elements and Systems (PBES...
Transcript of Prefabricated Bridge Elements and Systems (PBES...
Dan Weston, PEBridge Design Team Lead
Eastern Federal Lands Highway Division
Federal Lands Highway (FLH)
Prefabricated Bridge Elements and Systems (PBES)/Accelerated Bridge Construction
(ABC) at Federal Lands Highway DivisionPeer-to-Peer Exchange Workshop
Atlanta, GA, Nov. 17
Outline
Federal Lands Highway (FLH) Organization
FLH PBES/ABC Policy
PBES/ABC at FLH
SHRP2 Project Example
Lessons Learned / Challenges
Conclusion
FLH Office of Bridges and Structures Organization
Bridge Staff located in Eastern: 29Bridge Staff located in Central: 9Bridge Staff located in Western: 4
Implementationof PBES Policy
PRA-NATR 1E10NLS 10(1)SBN 169(1), 171(1)
SNY 100(1)
PBES/ABC at FLH
Rich Pakhchanian, Bridge EngineerEastern Federal Lands Highway Division
FLH Office of Bridges and Structures PolicyPrefabricated Bridge Element Systems considered first on all projects!
PBES/ABC at FLH
Various Types of Projects Bridge Replacement
Emergency Repairs
Rural/Remote Locations
Urban Locations
Challenging Environmental Conditions
Simple Construction w/o Contractor
Major Structures
George Washington Memorial ParkwayDead Run and Turkey Run Bridges, VA
Constructed in 1998 ADT 20,000
Weekend closures
100’-150’ erected per weekend Construction – 1 season for 3 bridges
300’- 400’ in length (each) 1.5 spans (150 feet) per weekend
Sabine National Wildlife Refuge, LA Emergency Relief Funding – Hurricane damage
2 Bridges – Bridge length 70’ (3 spans each)
High performance concrete (HPC) in remote location
1 week to drive piles
2 weeks to erect superstructures
Vieques National Wildlife Refuge, Puerto Rico
Remote location
70’ Span
Precast worked well for the remote location
GRS-IBS Abutments
Voided slabs
Wolf Trap National Park Pedestrian BridgeWolf Trap National Park for the Performing Arts, VA
Prefabricated in 3 sections
15 minute full closure
Main span erected in 4 hours
Normal construction – 25 days
Glacier National Park, MT Bridge length: 85’-0”
Entire bridge precast
Precast due to extremeweather conditions
Construction time Sept 29 – Nov. 11, 2014
Sequoia National Park, CA
34’ single span
Cost effective design
NPS forces built bridge
Construction – 3 months with 6 people
2013 American Segmental Bridge Institute (ASBI) Award of Excellence Roads & Bridges Magazine — Number 2 of the 2013 Top 10 Bridges 2014 PCI Design Award — Best Bridges with Main Span More than 150’
Foothills Parkway Bridge 2Great Smoky Mountains National Park, TN
Design Visualization
Fort Pulaski Bridge, GA
Bridge length: 1295’
70’/105’ spans
Entire bridge precast
Partial depth deck panels
Construction – 1 Calendar year
Movable Steel Truss Bascule Span Total length of the bridge: 2,108 feet Bascule span: 216 feet (Main Trunnion to Main Trunnion) Approach Spans: 10 Total (5 on each side of bascule) Curb to curb: 60 feet (6 lanes) Sidewalk width 17 feet
Arlington Memorial Bridge, Washington DC
FEDERAL LANDS HIGHWAY BRIDGE
Seney National Wildlife Refuge
J to H Spillway Bridge
Seney National Wildlife RefugeMichigan Upper Peninsula
Seney National Wildlife RefugeMichigan Upper Peninsula
Existing Bridge:
• Built in 1943
• Bridge length: 111’-6” (10 spans)
• 11’-5” curb-to-curb
• Timber stringers and timber plank
deck with longitudinal running boards
•Stoplog water control structure
with concrete piers
• Provides vehicle, bicycle and
pedestrian access to the refuge
Seney National Wildlife RefugeMichigan Upper Peninsula
New Bridge:
•The existing stoplog water control
structure to remain in place
• Bridge length: 132’-3” (3 spans)
• 12’-0” curb-to-curb
• Wisconsin 21” box beams
• Parapets cast with beams
• 5 ½” reinforced CIP overlay
• Precast abutments, piles and pier
caps
Seney National Wildlife RefugeMichigan Upper Peninsula
Precast Abutments and Pile Cap Precast Beams with Integral Bridge Rail
Lessons Learned / Challenges
Contractor’s knowledge with PBES construction
Contractors are set up for cast-in-place construction
Slightly higher construction costs estimates
Conclusion
FLH currently has about 40 active PBES/ABC projects
PBES/ABC have been used in a wide variety of applications
PBES/ABC is considered first on all projects
FLH continues to implement the technology and expand the
use of PBES/ABC to all types of bridges
Thank you!
FLH Bridges and Structures